MAS NMR-STUDIES OF TERNARY SILICATE-GLASSES

被引：5

作者：

PRABAKAR, S ^{[1
]}

RAO, KJ ^{[1
]}

机构：

[1] INDIAN INST SCI,SOLID STATE & STRUCT CHEM UNIT,BANGALORE 560012,KARNATAKA,INDIA

来源：

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES | 1991年 / 64卷 / 04期

关键词：

D O I：

10.1080/13642819108215265

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of silicate glasses based on PbO-B2O3-SiO2, PbO-Al2O3-SiO2, Bi2O3-Al2O3-SiO2 and PbO-PbF2-SiO2 have been studied using solid-state magic-angle-spinning (MAS) NMR of Si-29, Al-27 and B-11 nuclei. Al is found to be always four-coordinated in all these glasses. Si is present mostly as Q2 or Q3. Four-coordinated boron dominates the B-11 spectra. Calculated partial charges on Al, Si and B have been used to provide a rationale for the observed spectral features.

引用

页码：401 / 411

页数：11

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